A firefighter on the ground sees fire break through a window near the top of the building. There is voice contact between the ground and firefighters on the roof. The angle of elevation to the windowsill is 28o. The angle of elevation to the roof is 42o. The firefighter is 75 feet from the building and her eyes are 5 feet above the ground. What roof to windowsill distance can she report to the firefighters on the roof?
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